Lamp-guard.



c.; B. AUELF LAMP GUARD." APPLICATION FILED JUNE 4, 1915.

Patentd Dec. 31,1918.

INVENTOR Carl B. A u@/ WITNESSES ATTORNEY PATENT @Flli lltlm C1 EL B.AUEL. OF WILKINSBURG. PENNSYLVANIA, ASSIGNOR 'IO WESTINGHOUSE ELECTRICAND MANUFACTURING COMPANY, A CORPORATION OF PENNSYL- VANIA.

LAMP-GU ART).

To whom it may con ern lle it known that I, CARL B. AimL, a citizen oi"the United States, and a resident of llilkinsburg, in the county ofAllegheny and State of Pennsylvania, have invented a new and usefulImprovement in Lamptluards. of which the following is a speciiication.

invention relates to guards or looking devices for incandescent lampbulbs, and it has for its object to provide a device that shall besimple and inexpensive in construction and which will he efi' ective inprevent ing the unauthorized removal of incandescent lamp bulbs fromtheir sockets.

According to the present invention, T provide a lamp guard or lockingdevice that is particularly adapted for use in connection with lampsprovided with protecting shades. A lamp guard constructed in accordancewith my invention may be readily applied to the lamp bulb withoutremoving the shade.

1n the accompanying drawings; Figure 1 is a view, partially in sectionand partially in side elevation, of a lamp socket supporting a. shadeand an incandescent lamp and provided with a lamp guard constructed .inaccordance with my invention; Fig. 2 is a plan view of the parts shownin Fig. 1; Fig. 3 is a fragmentary view in side elevation at rightangles with respect to the parts in Fig. 1; Fig. 4 is an elevational 1of the parts shown in Fig. 1 and showmodification of the lamp guard;Fig. is a fragmentary view in. side elevation and right angles withrespect to'the parts shown in 4, and Figs. 6 and 7 are fr gmentary viewsshowing portions of the to lamp guard.

it. lamp socket 1 of any desired form support an incandescent lamp bulb2 that is in threaded engagement with the socket 1 and a shade 3 thatpartially incloses the lamp bulb The shade 3 comprises a bowl shapedmember 4 formed preterably of glass or any other suitable material. anda metal lie ii that is attached to the member id is suitably supportedby the socket 1. lamp guard 53 comprises a 11min body on 'i that isadapted to engage the bulb and a plurality oi radial extensions 8.

The body portion 7 comprises a pair oi" semi-elliptical portions 9 thatare disposed at at an angle with respect to each other. as

A. (l L Specification of Letters Patent.

Application filed June 4. 1915.

Patented Dec. 31. 1918.

Serial No. 32,187.

best shown in Fig. The length of the minor axis of the substantiallyelliptical figure formed by the portions 9 is somewhat less than thegreatest diameter of the bulb 2. The lamp guard 6 is heldconcentrically, with respect to the bulb 2, by means of the radialextensions 8 and the shade member 4. The shade member 4 is provided withoppositely disposed alined openings 10 which are adapted to receive theradial extensions 8. The radial extensions 8 are prevented from lateralmovement with respect to the bulb 2 by means of a bent-over portion 11provided at the end of one extension 8 and a. locking device 12 providedat the end of the other extension. The locking device 12 comprises acupshaped member 13 pro vided with a central opening to receive the endof the extension 8 and a nut 14 adapted to be in threaded engagementwith the said extension. The nut 14 may be turned downwithin the cupshaped member 13 by means of a suitable socket wrench and thereby retainthe lamp guard firmly in position.

Referring now to Figs. 4 and 5, the guard member 6 comprises a bodyportion formed of several circular turns 15 the mean diaine r of whichis less than the greatest diameter of thebulb 2. The guard member 8 ispreferably formed of wire that may be readily bent but which possessessuflicient rigidity and further comprises radial extensions 16 which areformed by continuation of the circular turns 15. The extensions 16 areinclined downwardly to clear the outer periphery of the globe member 1and are further bent to constitute upwardly extending vertical portions17 and inclined portions 18, as best shown in Fig. 6. The inclinedportions 18 severally extend up wardly and adjacent to that portion ofthe lamp socket 1 aboye the ring member 5 of the shade 3. The inclinedportions 18 respectively terminate in an eye portion 19 and asemi-circular portion 20 that is adapted to embrace substantiallyone-half of the periphery of the socket 1, as best shown in 6. Theportion 20 terminates in an enlarged portion 21 that is provided withthreaded opening 22. A second semi-circular portion-23 is pivotallysecured to the inclined portion 18 by means of the coacting eye portions'24 and 25 and terminates in a circular lug portion 26. The lug portion'26 is provided with a hollow cylindrical extension 27 and a centralopening 28 adapted to be in alinement with the opening 22 of theenlarged portion 21. A

bolt 29, extending through the opening 26 and the eye portion 1%), is inthreaded engagement with the opening 22 and serves to prevent thesemi-circular portion 23 from pivotal movement with respect to theportion 18.

' From the foregoing, it is apparent that it" will be impossible toremove the lamp guard without the use of a socket wrench especiallyadapted to engage the" nut 14: or the bolt 29. Furthermore, the lampguard may be readily applied to the incandescent lamp bulb withoutremoving the shade and with a minimum amount of trouble.

While I have shown my invention in a simple and preferred form, it isnot so limited but is susceptible of various minor changes andmodifications within the scope,-

of the appended claims.

I claim as my invention:

1. A guard for incandescent lamp bulbs directions from the said bodyportion and locking means associated with at least one of the saidsupporting members.

3. A guard for incandescent electric lamps comprising a body portionadapted to engage and hold the end of a lamp bulb, two

straight supporting members extending in opposite directions from thesaid body portion and locking means associated with at least one of thesaid supporting members, the said locking means comprising a nut inscrew-threaded engagement with the end of the said supporting member andan annular protecting member surrounding the said nut.

4. An illuminating device comprising an incandescent lamp socket, ashade carried by the said socket and provided with two oppositelydisposed openings, and a lamp guard comprising a body portion adapted toencircle the end of the lamp bulb held in the said socket, two straightsupporting members extending in opposite directions from the saidbody'portion and through the said perforations in the said shade, andlocking means associated with at least one of the said supportingmembers.

5. An illuminating device comprising an in candescent lamp socket, ashade carried by the said socket and provided with two oppositelydisposed openings, and a lamp guard'com prising a body portion adaptedto encircle the end of the lamp bulb held in the said socket, twostraight supporting members extending in opposite directions from thesaid body portion and through the said perforations in the said shade,and locking means associated with at least one of the said supportingmembers, the said locking means comprising a nut in screw-threadedengagement with the end of the said supporting member and an annularprotecting member surrounding the said nut.

In testimony whereof, I have hereunto subscribed my name this 26th dayof May 1915.

CARL B. AUEL.

